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Finding the Fourth Proportional to 371.27, 556.97 and 124.40

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Solution

The fourth proportional to 371.27, 556.97 and 124.40 is: 186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.27 : 556.97 = 124.40 : x
  2. Step 2: Convert to fraction form
    371.27/556.97 = 124.40/x
  3. Step 3: Cross multiply
    371.27x = 556.97 × 124.40
  4. Step 4: Simplify right side
    371.27x = 69,287.84
  5. Step 5: Solve for x
    x = 69,287.84/371.27
  6. Step 6: Final answer
    x = 186.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.